Cryptic Cycling (IMAGE) PLOS Caption The rotifer Brachionus exhibits regular cycles in abundance, but the alga Chlorella, on which it feeds, does not -- except in its genotype frequencies. The same occurs between the phage T4 and bacteria. Credit Photomicrograph: T. Yoshida and R. Wayne Usage Restrictions Please cite the authors and PLoS Biolofy as the source. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.